Process for producing molten pig iron or molten steel preproducts

Export gas from the preheating zone (2), possibly with an addition of reduction gas from the reduction zone (18), is used for production of hot-briquetted iron. Fine ore is preheated in a preheating zone, then largely reduced at least in one reduction zone before it is fed to a compacting and brique...

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Bibliographic Details
Main Authors WERNER KEPPLINGER, JOHANNES SCHENK, PANAJIOTIS MATZAWRAKOS
Format Patent
LanguageEnglish
Published 03.08.1994
Edition5
Subjects
BLASTING
CHEMISTRY
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE
FERROUS OR NON-FERROUS ALLOYS
FURNACES
FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL
HEATING
KILNS
LIGHTING
MANUFACTURE OF IRON OR STEEL
MECHANICAL ENGINEERING
METALLURGY
METALLURGY OF IRON
OPEN SINTERING OR LIKE APPARATUS
OVENS
PRETREATMENT OF RAW MATERIALS
PRODUCTION AND REFINING OF METALS
RETORTS
TREATMENT OF ALLOYS OR NON-FERROUS METALS
WEAPONS
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Summary:Export gas from the preheating zone (2), possibly with an addition of reduction gas from the reduction zone (18), is used for production of hot-briquetted iron. Fine ore is preheated in a preheating zone, then largely reduced at least in one reduction zone before it is fed to a compacting and briquetting unit. The heated export gas is directed into at least one reduction zone to produce a fluidized-layer bed. This gas is then extracted and fed (with partial combustion to rise its temperature) into the preheating zone to produce a fluidized-layer bed. The installation includes a gas line (6) with a CO washer and a heating unit leading to at least one further reduction reactor (8) connected by a gas line to a preheating reactor (1) with fluidized-layer bed.
Bibliography:Application Number: CN19931019321